I'm sorry to say that the cPony.com forums are temporarily down.
I had to take them down in July 2015 when the level of bots and spam began to be more than I could realisticsally control for a website that, while a labor of love (and believe me I do love sharing my passion for pony play and my pony experiences), is maintained in my spare time (which sadly has become progressively more and more rare - but that is something that I hope will will make change in the upcoming weeks and months).
I do intend to will reopen them in the future (let's set a target date of, oh, I don't know, say the vernal equinox 2025) once I have a little more free time to proactively moderate them in addition to implementing several automated solutions to mitigate the issue.
I am truly sorry that it got to the point that I felt that I had to take them down, if even temporarily (he says nearly a decade after he took them down :) ), but without proper mitigation of bots and spam, the forums would not serve their (or any) purpose of creating a space for ponies to chat and meet.
I hope you understand and will grand me the indulgence of just a touch more patience :)
In the interim, happy ponying my friends!
Also, do remember that when I have free time to adminster cpony.com, I am somewhat limited in my ability to implement solutions, you know, being a pony and all:

cPony diligently working on his website (photo by cPony.com).